The Australian Competition and Consumer Commission (ACCC) has launched Federal Court action against a company it has accused of ripping off people in Indigenous communities, including Queensland's Cape York.

The ACCC says Titan Marketing representatives engaged in misleading and unconscionable conduct when making door-to-door sales of first aid kits and water filters in Queensland, New South Wales and the Northern Territory.

It is alleged Titan made false or misleading representations about refunds, the value of its products and its affiliation with a charity.

It also allegedly entered into unfair contracts which allowed the company to debit the remaining contract amount if a single payment was missed.

The ACCC says it is concerned some of the alleged conduct took place in Indigenous communities, where some consumers were vulnerable and did not understand contracts.